Numerical modeling of revetment and sill in reducing shore erosion

Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
Coastal and Offshore Science and Engineering
Abstract
Interactions among waves, sand beaches, and rubble mound structures are difficult to investigate experimentally, because of the differences between the model and prototype, and to predict numerically, because of complex sediment dynamics inside porous structures. A small-scale experiment in a wave flume was conducted by Yuksel and Kobayashi (2019) in order to compare sand beach profile evolution and wave overtopping of a sand berm for the three cases of no structure (N), a stone revetment protecting a steep sand berm (R), and a stone sill reducing wave action on the berm (S). An existing numerical model verified with the small-scale N, R, and S tests was used to predict what may happen to prototype revetments and sills. Froude similitude with a length ratio of 1/16 (model/prototype) was used to scale up the incident waves, beach profile, and stones in the prototype. The sand was kept the same in hypothetical prototype PN (No structure), PR (Revetment), and PS (Sill) tests. The computed wave transformation and stone damage were predicted reasonably well. The beach profile changes were larger in the prototype because the fine sand was exposed to much larger waves.
Description
This article was originally published in Coastal and Offshore Science and Engineering. The version of record is available at: https://doi.org/10.53256/COSE_220101
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Citation
Kobayashi, N., & Yuksel, Z. T. (2022). Numerical modeling of revetment and sill in reducing shore erosion. Coastal and Offshore Science and Engineering, 1, 8–19. https://doi.org/10.53256/COSE_220101